anyone had this problem , I'm looking at a potential repair

 

search for IMS and enjoy the next months worth of reading.

 

How many miles does your car have ?

It seems like it's ALWAYS a 3.8 L engine.

 

31 ,000 reading 2006 year requires complete engine tear down

 

Can you give more information? What happened? Are you sure its the IMS?


How many owners has your 997S had or are you the only owner? I ask due to my second question - what is the service history like? At what mileage intervals was the oil changed?


From my understanding this is a summary of the IMS -


997.1 MY06 onwards up until 997.2 has a non serviceable IMS
997.1 MY06 onwards up until 997.2 has the third and final revised IMS, which has the greatest speed and load bearing of all IMS used previously.
997.1 MY06 onwards up until 997.2 has a IMS failure rate of less than 1%.


Even the LN Engineering upgrade IMS are not 100% guaranteed not to fail. But these can only be installed in 2005 997.1 or the 996's.


Sorry to hear about your IMS failing but if you can answer the questions I asked that would help us all out as this is the first time I have heard of one failing from an actual owner and not just hearing stories about it failing, the Porsche workshop where I have my 997 serviced said out of the hundreds of 997s they have serviced they have only seen 1 IMS fail, that's a failure rate of less than 1%.

 

You are talking about and IMS and not an RMS, right?

 

Looks like the IMS settlement only covers up to 2005
http://www.imsporschesettlement.com/faqs/#qq8

 

So bearing failure has been verified. Nightmare scenario. If possible could you share the details of the failure, warning symptoms, mode of failure, etc?This is a rare problem with post '05 cars. Feel for you bhart If your car is an early 06 manufacture it may have had the small bearing. Tech's should know by now and that information might be useful in any conversation w PNA.

 

Sorry to read about the failure.

I have not experienced this but came upon a 996 engine apart at a dealer a few years back.

Fortunately the driver heard some noises and shut down the engine in time.

The tech told me -- showed me i fact the engine hardware (and I snapped a bunch of pics) -- he verified the engine was salvageable and tore the engine down and cleaned out where the IMSB debris was and fitted a new IMS and bearing, replaced one or two camshaft chain guides/rails that suffered a bit from the slapping arising from excessive chain slack then reassembled the engine and it was good to go.

I do not know the cost of this -- the car only had 20K miles on it but was out of warranty.

What options are you considering? Can the engine be resurrected? Or does it have to be replaced? Are you thinking about an engine from Porsche? Or a used engine from another car?

 

picked it up in 08 with 12K put another 18K on , several DE's , heard what I thought was a lifter tapping after last run @ Robling Road two weeks ago , took to usual shop had them cut open filter found metal , so everyone jumped on IMS ; o6 IMS requires engine tear down to access IMS , changed oil after every DE, don't know if this matters but this was a early 2006 built in Sept 2005 I think I'll have to check

 

Sorry to hear about the issue.

The 997.1 cars also had issues of scoring in cylinder 6 (I think, or 5). Could that also result in metal particles in the oil?

http://rennlist.com/forums/997-forum...ml#post9284670
Post #7 might be helpful in determining if your car has the old or new IMS bearing.

 

I don't agree, any non serviceable IMS should have the 3rd revised large IMS bearing.


Mine is a August 2005 build, MY06 model, but I have the non serviceable IMS. Which means I have the final revised large single ball bearing.


If I didn't have this IMS design it would mean that my IMS is serviceable, which it isn't. All 2005 models (non MY06) have serviceable IMS bearings.


It's also confirmed in shyamvenky's above post, my engine number is 68514175 - large IMS bearing.


While we're on this subject oil changes are best done every 5000kms to avoid failure or at least check on the possibility. Another way to avoid IMS failure is to drive it like you stole it. Low revs are bad for the IMS bearing. That's why I always try to drive my tiptronic in manual mode as much as possible to avoid driving in 4th gear at 60kmh.


Also ticking noises aren't always a sure sign of IMS failure, I heard slight ticking sounds coming from my engine on a couple of cold starts about 5000kms ago but haven't heard it since. Could of been a number of things but it only happened a couple of times and not since it musn't be an issue.


.

 

could it not be cylinder scoring? it is VERY rare for any feb 05+ manufacturee date (largest beefiest bearing) 911 to have ims issue.

not saying that it doesnt happen but it's very rare.

sorry to hear this and please let us know of the shops official diagnosis.

 

What is the size of the metals found in the oil filter?

 

Should have bought an 09!